pushXXbytes method
Implementation
Future<bool> pushXXbytes(String xxInt, Uint8List data, bool ghostMode) async {
if (_xxStash[xxInt] != null) return false;
_xxStash[xxInt] = data;
_io!.commitUint8List(data, 'xx' + xxInt.toString());
//_diskMissing.remove(xxInt);
return true;
}